A centrifugal pump is used to pump water from a reservoir whose surface is 4 feet (1.22 meters) above the pump inlet centerline (Z2-0). The piping system from the reservoir to the pump consists of several fittings, with a total minor loss coefficient (K) of 7. a) Estimate the pressure required at the pump inlet (NPSH_Available) at 25°C and 70°C if the required net head (HL, total) at 500 gpm flow rate is 7.5 m. b) According to your findings from part a, at what temperature (25°C or 70°C) can a pump with a required NPSH of 10ft (3.048 meter) be used without cavitation in this system? c) At water temperature 70 C, would NPSHrequired increase or decrease? Why?.

A centrifugal pump is used to pump water from a reservoir whose surface is 4 feet (1.22 meters) above the pump inlet centerline (Z2-0). The piping system from the reservoir to the pump consists of several fittings, with a total minor loss coefficient (K) of 7. a) Estimate the pressure required at the pump inlet (NPSH_Available) at 25°C and 70°C if the required net head (HL, total) at 500 gpm flow rate is 7.5 m. b) According to your findings from part a, at what temperature (25°C or 70°C) can a pump with a required NPSH of 10ft (3.048 meter) be used without cavitation in this system? c) At water temperature 70 C, would NPSHrequired increase or decrease? Why?.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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